Concrete-mixer.



E. E. WILLIS.

CONCRETE MIXER.

APPLIUATION FILED SEPT. 27, 1912.

1,074,918. Patented 0011.7,1913.

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E. E WILLIS.

CONCRETE MIXER.

APPLIUATION FILED SEPT. 27, 1912.

1 ,074,9 1 8. t Patented Oct. 7, 1913.

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Inventor Attorneys Witnesses E. E. WILLIS.

CONCRETE MIXER.

APPLICATION FILED SEPT. 27, 1912.

1,074,91 8. Patented Oct. 73 1913.

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W zu/7 Witnesses mslnventor Attdrneys UNITED STATES PATENT OFFICE.

ELMER E. WILLIS, 0F MINETTO, NEW YORK, ASSIG-NOR 0F ONE-HALF TO ALPH ST.AMONT, OF MINETTO, NEW YORK.

CONCRETE-MIXER.

Specification of Letters Patent.

Patented Oct. 7, 1913.

Application filed September 27, 1912. Serial No. 722,730.

T 0 all whom it may concern Be it known that I, ELMER E. WILLIs, a

citizen of the United States, residing at' Minetto, in the county ofOswego and State of New York, have invented a new and usefulConcrete-Mixer, of which the following is a specification.

This invention relates to an improvement in concrete mixers.

The primary object of the present invention is to provide a machine ofthis character which will accurately supply sand and cement inpredetermined quantities to a mixing mechanism.

A further object of the invention is to provide simple and efiicientmeans for closing the sand and cement hoppers, while the troughs whichreceive the material from said hoppers are dumping.

A still further object of the invention is to provide means for lockingthe dumping troughs together, in order that the same may dumpcon'sonantly.

A still further object of the invention is to provide an accurateweighing mechanism which may be readily and conveniently adjusted whenit is desired to vary the quantity of sand and cement supplied to themixing mechanism. i

A still further object of the invention is to provide an eflicientmixing mechanism which will thoroughly mix the sand and cement, sprayingthe same with water as it is being mixed.

In the drawings Figure 1 is a side elevation of the machine. Fig. 2 is avertical section. Fig. 3 is a vertical transverse section. Fig. 4 is asection taken on line 4-4; of Fig. 1 looking downwardly. Fig. 5 is adetail view of the trough which receives the commingled sand and cement,and Fig. 6 a detail view of the latch mechanism which holds the sandtrough against dumping until the cement trough has received apredetermined quantity of cement.

In the drawings, 10.designates the supporting frame, which consists ofthe vertically extending angle beams 11, 12, Isl and 15 which areconnectedat their upper ends by the longitudinally disposed angle beams16 and 17, each set of vertical beams being connected by .thetransversely extending beams 18 and 19 which are also of angle iron. Thelongitudinal beams 16 and 17 support a plurality of hoppers 20 and 21,

these hoppers being preferably formed of sheet metal, bent to embracethe angle beams 16 and 17, and the transverse beams 18 and 19, thetransverse beam 2 1 connecting the beams 16 and 17 intermediate theirends, the hoppers having the overlapping portions 25, which embrace thetransverse beams 24. The second set of longitudinal beams connect thevertical standards intermediate their ends, this second set of beamssupportingaplurality of pivoted troughs which receive material from thehoppers 20 and 21. The vertically extending beams, being connected bybraces 26 which are V-shaped and are secured to the second set of beamsintermediate their ends. The vertically extending beams are alsoconnected by a second set of transverse beams 27 and 28 whichare'inwardly disposed to support the second set of longitudinal beams 29which are also disposed inwardly, the transverse beams 27 and 28 alsosupporting another set of longitudinal beams which are disposedoutwardly, their edge portions 29 lying flush with the edge portions ofthe longitudinal beams 31, thus forming a frame consisting o1longitudinally disposed U-shaped members, which form a support for aplurality of pivot-ed troughs, which receive the material from thehoppers 20 and 21 and to which the mixing mechanism is secured.

The mixing mechanism consists of the hopper 33, the extensions 34 ofwhich are secured to brackets 35 which overhang the inner angle beams,said hangers and the extensions of the hoppers extending inwardly andupwardly to support the pivoted troughs at a point immediately below theopenings in the hoppers 2O and'21. The openings in these hoppers areclosed by adjustable slides 35 which are adapted to restrict or entirelyclose said openings. Each of the hoppers is provided with. a pivotallysupported closure which consists of a plate 37, having the offsetportions 38, each of which portions 38, is-pivotally-connected to twohangers 39. The hangers39 are pivotally connected to brackets 40supported by the longitudinal beams 16 andlT, these pivoted arms 39being arrangedon either side of the same, the plurality of arms beingadjustably connectedto each ofthe oft-set edges of the plates 87. Itwill be noted by this construction that the plates 37, normally swingbeneath the openings in the hoppers, preventing the material containedtherein from falling within the pivoted troughs which deposit the samein the mixing device. The plate which is disposed beneath the cementhopper 20 is provided on its under face with a substantially U- shapedmember 41 which straddles the rear wall 42 of one of the pivotallysupported troughs 43 arranged beneath the cement hopper. Thus it will beseen that movement imparted to the trough will force the plate 37,beneath the hopper 20, preventing the material contained therein fromfalling, while the trough 43 is dumping. The trough is normally heldparallel with the longitudinal beams by a weight 44 which is arranged onthe bar 45 secured to the trough, the trough being pivotally supportedbetween the brackets 35. It will be noted by this construction that thehoppers 20 is provided with a plurality of closures, the adjustableslide which is manipulated by means of pivotally connected levers 48 and49 supported by a bracket 50 secured to the hopper 20. The hopper 21which is adapted to contain the sand is of practically the sameconstruction as the hopper 20, the same, however, being provided with abrush 51. The plate 51 forms the closure for the hopper 21 and preventsthe sand from falling while the trough 43 which is arranged below thesand hopper, is dumping. This trough is also provided with a weightedbar 52 which is connected by means of a chain 53 to a bell-crank 54pivotally supported by a bracket 55 secured to the transverse beam 19.The other end of said bell crank having a link connection with the plate51, which when the trough 43 is dumped allows the plate due to theweight of the plate 51 and the tendency of the hangers 39 to assume avertical position, to close the hopper, the normal tendency of the platebeing to close said hopper, the same being held open by the trough, whenthe same is in its receiving position.

In order to accurately regulate the quantities which the troughs 43 areto receive a beam 55 is pivotally supported by a bracket 56 at a pointadjacent the meeting ends of the troughs, said beam being provided witha latch member 57 which permits the free upward movement of the trougharranged beneath the cement hopper, which is adapted to contact with theoff-set end 59 of the bar 60 which is secured to said trough preventingthe same from moving downward. Arranged on the bar 55 is a weight 61,which may be adjusted to determine the amount of material necessary totip the bar. Thus it will be noted that the amount of material whichwill be-deposited within the cement hopper may be accurately regulatedby an adjustment of the weight 61. In order that the troughs 43 maydeposit the material consonantly, the latch member 62 is provided whichconsists of a pivotally supported latch bar 67 supported by the bracket68 and being guided in its movement by the bifurcated standard 69.Arranged on the end of said pivoted bar is a pivoted latch member 70which while restricting the downward movement of the cement trough,allows the same to assume its position after dumping. The latch bar isprovided with a notch, and said bar lies in the path. of a )l'OjGCtlOIl72 carried by the sand trough, said bar normally preventing said troughfrom dumping. It will be noted however that as the cement trough isfilled and dumped, the bar 67 will be tipped, Which will release thesand trough, the two troughs dumping consonantly.

The material which is dumped is deposited within the hopper 33 whichterminates in the spout 74. To this hopper is secured the mixing chamber75. Arranged within said chamber immediately below the spout of thehopper 33 and on which the material falls is a V-shaped deflector 77which is disposed longitudinally of the chamber 68. Arranged below saiddeflector are the pivotally supported troughs 7 9 and 80 shown in detailin Fig. 6. These troughs are hingedly connected to the side walls of thecasing, and

are connected with the latch member 83' which permits the members toswing freely on their pivots. This latch member consists of the arm 84which extends through an eye 85 carried by the other trough, the armbeing curved and provided with an enlarged head which prevents the samefrom leaving the eye. Both of the troughs are provided with curved stops86 which limit their downward movement, said stops 86 contacting withthe side walls of the casing. The troughs are held against dumping bythe weight 87 secured to the arm 88 which projects through the casingand which is secured to one of the troughs. The other trough is providedwith a similar arm 89 which operates the valve 90 through the link 91,said valve being opened as the troughdumps, allowing the water to flowthrough the pipe 92 and be sprayed through the material by therectangular nozzle 93.

In operation the material is supplied to the hoppers 20 and 21 and thesame supplied by the hingedly supported trough, to the mixing mechanism.The material passes through the hopper 33 becoming mixed during itsdescent and is further mixed as the same falls upon the V-shapeddeflector arranged immediately below the distributing end of the hopper33. It then falls upon the trough 82 and when suflicient of the materialhas fallen on said trough the same dumps and deposits the same on theconical deflector 92 which is disposed immediately below the trough 82,the same being sprayed be clearly apparent as it will be noted that thematerial is effectually mixed in a simple and convenient manner and thatthe entire structure is such as may be cheaply and economicallyconstructed, the entire operation of the feeding and mixing beingautomatic as long as the hoppers 21, and 20 receive material. Attentionis also called to the mechanism by means of which the quantity which isperiodically supplied to the mixing chamber may be accurately regulated,and means for closing the main supply hoppers while the material isbeing supplied to the mixing mechanism, thus positively preventing acontinued flow ofthe material from the supply hoppers, the material asbefore stated being passed through the mixing mechanism in smallquantities which assure an even and proper mixture.

What is claimed is 1. In a concrete mixing and weighing machine, aframe, a plurality of hoppers supported by said frame, a plurality ofplates arranged to form closures for the delivery openings in saidhoppers, arms supporting said plates, said arms being pivot-ally supported by said frame, a trough arranged beneath said hoppers, a U-shapedmember carried by one of said plates, said member straddling the rearwall of one of said hoppers, a bell crank supported by said frame, a '5chain connecting said bell crank with the other of said trou-ghs,-and alink connection mixing and between said bell crank and one of saidplates.

2. In a concrete mixing and weighing machine, a plurality of stationaryhoppers, a plurality of pivoted troughs arranged beneath said hoppers, areceiving hopper arranged below said t-roughs,a second set of pivotedtroughs arranged below the receivlng hopper, said troughs having aconnection whereby the same will dump consonantly. 7

3. In a concrete mixing and weighing machine, a plurality of hoppers, aplurality of stationary troughs arranged to receive material from saidhoppers and means actuated by said troughs for closing the deliveryopenings in said hoppers, a receiving hopper arranged below saidtroughs, a deflector arranged beneath said receiving hopper and aplurality of pivoted troughs arranged below said deflector, said troughsdumping consonantly.

4. In a concrete weighing and mixing machine, a plurality of stationaryhoppers, a receiving hopper, means for delivering the material to saidreceiving hopper in predetermined quantities, said means includingtroughs arranged to dump consonantly and a plurality of troughsreceiving the material from said receiving hopper.

5. In a concrete mixing and weighing machine, a plurality of stationaryhoppers, a plurality of troughs arranged beneath said hoppers, areceiving hopper, a plurality of weighted troughs arranged beneath saidreceiving hopper, said troughs being provided with stops adapted tolimit their downward movement.

In testimony that I claim the foregoing as my own, I have'hereto aflixedmy signature in the presence of two witnesses.

' ELMER E. WILLIS.

WVitnesses ALPH ST. AMANT, WM. BERNETHY.

